With Windows 8.1 releasing to the masses it's important to get a handle on the functions the different "versions" of Windows 8.1 are intended to serve and the differences in features.

Windows 8.1 comes in three different versions: Basic Edition, Pro, and Enterprise.

Basic Edition – Windows 8.1 Basic Edition (or just Windows 8.1) is intended for home users. This version includes the core features, but none of the business features. Basic Edition is great for those general consumers (mother, grandmother, father, step-uncle, far removed cousin).

Pro – Windows 8.1 Pro is the operating system intended for small and medium-sized businesses. It provides abilities such as joining corporate domains, participating in Group Policy, allowing involvement in Work Place Join and Work Folders, encryption and more. You can find a good list of business features in the The IT Guide to Windows 8.1. Note that some of the new business features in Windows 8.1 Pro require a server running Windows Server 2012 R2 somewhere in the organization.

Enterprise – Windows 8.1 Enterprise is the version that brings business premium features to Windows. Available through Windows Software Assurance, Windows 8.1 Enterprise includes all of the same features of Windows 8.1 Pro and then adds things like Windows To Go, DirectAccess, BranchCache, AppLocker, Virtual Desktop Infrastructure (VDI), and Windows 8 app deployment.

I would opt for SSD's that contains encryption technology like the 850EVBO pro or others like crucial etc;. remember that you can separate your servers so that there are internal and externally accessible files , folders, etc. If everyone realized this and only allowed partial access no one can hack your system. It is a little more work what with sending info in a compressed format and then scanning and reopening to effect the internal system but, security is becoming more and more necessary.